Stamicarbon B.v.

Johannes Lambertus Kursten

Jozef Hubert Meessen

Petrus Anna Maria Robertus Simons

Willem Frederik Roos

Petrus Anna Simons

A fluidized bed granulator for granulation with urea or urea-containing liquids is described, wherein the granulation liquid is supplied via a supply manifold comprising a header and risers. The risers are at least in part provided inside channels for secondary gas.

Urea granulation device

The present invention relates to a process for the production of granules from a liquid composition with a decreased dust production, the process steps are as follows: applying the liquid composition onto solid particles that are kept in a continuous movement by a gas stream in a granulation zone of an oblong granulator, thereby depositing and solidifying liquid composition around the solid particles to increase the size of the particles and thereby form grown solid particles; discharging a stream of the grown solid particles from the granulation zone, dividing, in a size-sorting apparatus, the stream of grown solid particles into individual streams based on the size of the grown solid particles to thereby produce streams of undersized, oversized, and desired-sized grown solid particles; transferring the stream of oversized grown solid particles to a size-reducing apparatus; crushing the stream of oversized grown solid particles in the size-reducing apparatus, thereby reducing the particle size of the oversized grown solid particles and thereby producing a stream of crushed solid particles wherein that stream of crushed solid particles is introduced in the granulator at a place below the place where the gas stream leaves the granulator.

Growing community of inventors

Weert, Netherlands

Johannes Lambertus Kursten